Note: IBM Traveler 9.0.1.20 does not include a database schema update.

You can download the update as usual on IBM FixCentral.

An IBM Traveler 9.0.1.20 full installation package, which will be available by November 22, 2017, can be used to upgrade any previous Traveler server or to install a new environment.

Update: If you are still running a Domino 32-Bit version - Traveler 9.0.1.20 no longer supports 32-Bit. Please, take a look at the System Requirements: http://www-01.ibm.com/support/docview.wss?uid=swg27045363